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Find the mean of any list of numbers, with sum, count, median and range.

Sample or population standard deviation, with the variance and the mean.

Find the nth term, the sum and the common difference of an arithmetic sequence.

Geometric mean of a list of positive numbers, for growth rates and ratios.

Harmonic mean of a list of numbers, the right average for rates such as speeds.

Average values that count for different amounts, such as weighted grades.

Logarithms in any base, including log base 10 and the natural log (ln).

Square root, cube root or any nth root of a number.

Simplify square roots and other radicals by prime factorization.

Add, subtract, multiply and divide binary numbers.

Add and multiply matrices and find the determinant.

Find a mod n with steps, for negative numbers and whole numbers of any size.

Divide two numbers and get the whole-number quotient and the remainder.

Percent of a number, what percent, percent change and a percent of a percent, with steps.

Volume and surface area of a cylinder from its radius and height.

Pick random whole numbers or decimals in any range, with or without repeats.

Pick random letters in upper or lower case, without repeats, or only vowels or consonants.

Pick a random month, with optional years and several output formats.

Picks a random date between two dates, a random day of the year or a random birthday for an age range.

Round a number to any decimal place or to the nearest multiple.

Raise a number to any power, including negative and decimal exponents.

Solve a proportion by cross multiplication, scale a recipe or compare ratios.

Greatest common divisor (GCF or HCF) of two or more numbers, with Euclid's steps.

Least common multiple of two or more numbers, by prime factorization.

Find any side of a right triangle with a² + b² = c².

Find a missing side or angle of any triangle with the law of cosines.

Find the orthocenter of a triangle from the coordinates of its three corners.

Find the eigenvalues and eigenvectors and write a matrix as A = PDP⁻¹.

Add, subtract, multiply and divide mixed numbers and fractions, with steps.

Cross product of two 3D vectors, with its magnitude and direction.

Split a length in the golden ratio or size a golden rectangle.

Find coterminal angles, the reference angle and the quadrant, in degrees or radians.

Arctan of any value, in degrees and radians.

Find the unit rate or unit price and compare offers to find the best deal.

Average rate of change between two points or over an interval of a function.

Estimate a value between two known points on a straight line.

Percent error between a measured and a true value, for one or several trials.

Kinetic energy of a moving object from its mass and speed (KE = ½mv²).

Potential energy of an object from its mass and height (PE = mgh).

Fill in any two of speed, distance and time to get the third, with travel time in hours and minutes.

Find voltage, current, resistance or power from any two of them.

Dew point from the air temperature and the relative humidity.

Power from work and time, force and speed, or voltage and current, in watts or horsepower.

See how savings grow with compound interest, with the compounding frequency you choose.

Add VAT to a net price, or take it out of a gross price.

Work out sale prices, how much you save and what a promotion or rebate is worth.

Simple and compound interest on a loan or an investment.

Compare LEGO sets by price per piece to see which one is the better deal.

Estimate dividend income and yield, and project growth with dividends reinvested (DRIP).

Estimate staking rewards from the APY, with and without compounding.

Find the selling price, markup, cost or profit margin from the figures you know.

Convert basis points to percent and decimals, and see what a change in bps means in dollars.

Convert inches, feet, meters, miles and other units of length.

Convert pounds, ounces, kilograms, grams and other units of weight and mass.

Convert between Celsius, Fahrenheit and Kelvin.

Convert mph, km/h, knots and other units of speed.

Convert psi, bar, atm and other units of pressure.

Convert square feet, square meters, acres, hectares and other units of area.

Encode or decode text with a Caesar shift cipher.

Write any number out in words, in upper, lower or title case, or as dollars and cents.

Find when to go to bed or when to wake up, based on 90-minute sleep cycles.

Adult BMI with its category, the healthy weight for your height and how far you are from it.

Estimate your basal metabolic rate and how many calories you need each day.

Estimate how many calories you burn in a day, with calorie goals and a macro split.

Work out your pace, speed, finish time or distance for a run.

Turn steps into miles or kilometers, or a distance into steps.

Works out how long a file takes to download, or the internet speed you need to get it in time.

Find your high school graduation year from your grade, your birthday or your class year.

Make a Punnett square for one to three genes, X-linked traits or blood types, with genotype and phenotype ratios.

Converts Minecraft coordinates between the Overworld and the Nether and checks whether two portals will link.

Find n! for any whole number, with the multiplication written out.

Estimate how much rainwater your roof can collect in a year from its area, the rainfall and the roof material.